Petra Wall Mounted PWM 68ex explosion-proof air-cooled package unit

Photo: Mariusz Młynarczyk / CloudAir.tech

A Petra unit labelled "Petra Wall Mounted (PWM 68ex)" stands in the foreground, its panel listing explosion-proof features of an air-cooled package outdoor unit using R-407C. Behind it, the red carpet leads past printed columns and a chiller with perforated guards.